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Mistral Small 2603

Bare model

The model alone, run by the benchmark harness with the fixed prompt.

Vendor
Mistral
Provider
Mistral La Plateforme
Region
EU
Version
mistral-small-2603
Composition
Model with the fixed benchmark prompt

F2 score

73.5%95% CI 67.7%–79.4%

Leak recall

73.6%95% CI 66.5%–80.8%

Over-redaction

26.7%95% CI 22.1%–33.2%

Output precision

58.3%95% CI 50.6%–63.6%

Cost per 1,000 pages

EUR 0.5095% CI not applicable · measured list-price cost

Recall by bucket

Universal identifiers
81.5%95% CI 74.3%–92.2%
Names
96.0%95% CI 94.5%–97.3%
Contextual personal data
46.2%95% CI 32.6%–57.8%

Breakdowns

Groups below the reporting floor are not shown.

LanguageDocumentsF2RecallOver-redaction
de2471.8%78.5%46.5%
en2470.2%72.8%38.6%
es2276.1%76.1%23.7%
fr2073.9%74.5%28.2%
it2364.4%61.9%23.2%
nl2279.1%80.3%25.3%

Provenance

Dataset version and split
1.0.0-r3+labels.20261006.1 · tuning
Scoring
1.3
Harness version
pilot-2026-10-15
Run date
2026-10-14
Documents
135
Pages
892
Repeats
1
Price date
2026-09-29
Spend
EUR 0.44
Credits
None · paid by OpenDisclosure

Cite this

@misc{eu-redaction-mistral-small-2603-mistral-eu-no-roster,
  author = {OpenDisclosure},
  title = {EU Redaction Benchmark: Mistral Small 2603},
  year = {2026},
  url = {https://opendisclosure.eu/benchmark/models/mistral/mistral-small-2603/no-roster/},
  note = {r3-tuning-pilot-2026-10-15; tuning split; scoring 1.3}
}
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